<?php

/*
 * FCKeditor - The text editor for internet
 * Copyright (C) 2003-2006 Frederico Caldeira Knabben
 * 
 * Licensed under the terms of the GNU Lesser General Public License:
 * 		http://www.opensource.org/licenses/lgpl-license.php
 * 
 * For further information visit:
 * 		http://www.fckeditor.net/
 * 
 * "Support Open Source software. What about a donation today?"
 * 
 * File Name: fckeditor.php
 * 	This is the integration file for PHP.
 * 	
 * 	It defines the FCKeditor class that can be used to create editor
 * 	instances in PHP pages on server side.
 * 
 * File Authors:
 * 		Frederico Caldeira Knabben (fredck@fckeditor.net)
 */

class FCKeditor
{
    var $InstanceName;
    var $BasePath;
    var $Width;
    var $Height;
    var $ToolbarSet;
    var $Value;
    var $Config;

    // PHP 5 Constructor (by Marcus Bointon <coolbru@users.sourceforge.net>)

    function FCKeditor($instanceName)
    {
        $this->__construct($instanceName);
    }

    // PHP 4 Contructor

    function __construct($instanceName)
    {
        $this->InstanceName = $instanceName;
        $this->BasePath = '/fckeditor/';
        $this->Width = '100%';
        $this->Height = '200';
        $this->ToolbarSet = 'Default';
        $this->Value = '';

        $this->Config = array();
    }

    function Create()
    {
        echo $this->CreateHtml();
    }

    function CreateHtml()
    {
        $HtmlValue = htmlspecialchars($this->Value);
        $Html = '<div>';

        if ($this->IsCompatible()) {
            if (isset($_GET['fcksource']) && $_GET['fcksource'] == "true")
                $File = 'fckeditor.original.html';
            else
                $File = 'fckeditor.html';

            $Link = "{$this->BasePath}editor/{$File}?InstanceName={$this->InstanceName}";

            if ($this->ToolbarSet != '')
                $Link .= "&amp;Toolbar={$this->ToolbarSet}";

            // Render the linked hidden field.
            $Html .= "<input type=\"hidden\" id=\"{$this->InstanceName}\" name=\"{$this->InstanceName}\" value=\"{$HtmlValue}\" style=\"display:none\" />";

            // Render the configurations hidden field.
            $Html .= "<input type=\"hidden\" id=\"{$this->InstanceName}___Config\" value=\"" . $this->GetConfigFieldString() . "\" style=\"display:none\" />";

            // Render the editor IFRAME.
            $Html .= "<iframe id=\"{$this->InstanceName}___Frame\" src=\"{$Link}\" width=\"{$this->Width}\" height=\"{$this->Height}\" frameborder=\"0\" scrolling=\"no\"></iframe>";
        } else {
            if (strpos($this->Width, '%') === false)
                $WidthCSS = $this->Width . 'px';
            else
                $WidthCSS = $this->Width;

            if (strpos($this->Height, '%') === false)
                $HeightCSS = $this->Height . 'px';
            else
                $HeightCSS = $this->Height;

            $Html .= "<textarea name=\"{$this->InstanceName}\" rows=\"4\" cols=\"40\" style=\"width: {$WidthCSS}; height: {$HeightCSS}\">{$HtmlValue}</textarea>";
        }

        $Html .= '</div>';

        return $Html;
    }

    function IsCompatible()
    {
        global $HTTP_USER_AGENT;

        if (isset($HTTP_USER_AGENT))
            $sAgent = $HTTP_USER_AGENT;
        else
            $sAgent = $_SERVER['HTTP_USER_AGENT'];

        if (strpos($sAgent, 'MSIE') !== false && strpos($sAgent, 'mac') === false && strpos($sAgent, 'Opera') === false) {
            $iVersion = (float)substr($sAgent, strpos($sAgent, 'MSIE') + 5, 3);
            return ($iVersion >= 5.5);
        } else if (strpos($sAgent, 'Gecko/') !== false) {
            $iVersion = (int)substr($sAgent, strpos($sAgent, 'Gecko/') + 6, 8);
            return ($iVersion >= 20030210);
        } else
            return false;
    }

    function GetConfigFieldString()
    {
        $sParams = '';
        $bFirst = true;

        foreach ($this->Config as $sKey => $sValue) {
            if ($bFirst == false)
                $sParams .= '&amp;';
            else
                $bFirst = false;

            if ($sValue === true)
                $sParams .= $this->EncodeConfig($sKey) . '=true';
            else if ($sValue === false)
                $sParams .= $this->EncodeConfig($sKey) . '=false';
            else
                $sParams .= $this->EncodeConfig($sKey) . '=' . $this->EncodeConfig($sValue);
        }

        return $sParams;
    }

    function EncodeConfig($valueToEncode)
    {
        $chars = array(
            '&' => '%26',
            '=' => '%3D',
            '"' => '%22');

        return strtr($valueToEncode, $chars);
    }
}

?>